1SDB

PORCINE DESB1-2 DESPENTAPEPTIDE(B26-B30) INSULIN


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.65 Å
  • R-Value Free: 0.220 
  • R-Value Work: 0.203 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Structure of monomeric porcine DesB1-B2 despentapeptide (B26-B30) insulin at 1.65 A resolution.

Diao, J.S.Wan, Z.L.Chang, W.R.Liang, D.C.

(1997) Acta Crystallogr D Biol Crystallogr 53: 507-512

  • DOI: 10.1107/S0907444997004034
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • Insulin has a concentration of 10(-8)-10(-11) M in the blood which ensures that it circulates and exerts its physiological functions in vivo as a monomer. The crystal structure of monomeric porcine desB1-B2 despentapeptide (B26-B30) insulin (DesB1-2 ...

    Insulin has a concentration of 10(-8)-10(-11) M in the blood which ensures that it circulates and exerts its physiological functions in vivo as a monomer. The crystal structure of monomeric porcine desB1-B2 despentapeptide (B26-B30) insulin (DesB1-2 DPI) with M(r) = 4934 Da has been determined at 1.65 A resolution using the molecular replacement method. A structural comparison between DesB1-2 DPI and 2Zn insulin reveals that the conformation of DesB1-2 DPI is more similar to molecule I than molecule II of 2Zn insulin. The remarkable conformational difference between B25-Phe in DesB1-2 DPI and B25-Phe in despentapeptide (B26-B30) insulin (DPI) indicates that the residue B25-Phe possesses great flexibility and mobility.


    Related Citations: 
    • Refinement of the Structure of Despentapeptide (B26-B30) Insulin at 1.5A Resolution
      Dai, J.B., Lou, M.Z., You, J.M., Liang, D.C.
      (1987) Sci Sin (engl Ed ) 30: 55

    Organizational Affiliation

    National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
DESB1-2 DESPENTAPEPTIDE (B26-B30) INSULIN
A
21Sus scrofaMutation(s): 0 
Gene Names: INS
Find proteins for P01315 (Sus scrofa)
Go to UniProtKB:  P01315
Protein Feature View
  • Reference Sequence

Find similar proteins by: Sequence  |  Structure

Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
DESB1-2 DESPENTAPEPTIDE (B26-B30) INSULIN
B
23Sus scrofaMutation(s): 0 
Gene Names: INS
Find proteins for P01315 (Sus scrofa)
Go to UniProtKB:  P01315
Protein Feature View
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.65 Å
  • R-Value Free: 0.220 
  • R-Value Work: 0.203 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 26.88α = 90
b = 24.5β = 103.83
c = 28.11γ = 90
Software Package:
Software NamePurpose
XENGENdata collection
GPRLSArefinement
XENGENdata reduction

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1997-02-12
    Type: Initial release
  • Version 1.1: 2008-03-24
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance